Originally posted by Ryzilynt:

I think it's a new "smelter"-like craft-able processing station that requires black cores to build.

Perhaps it works to, separate black cores from whatever the matrix in which they naturally occur. Perhaps it requires a Yagluth drop to construct, like a blast furnace requires Moder's tears.

Not too exciting but it does follow more-or-less the current pattern: Eikthyr drops hard antlers so one can make a pickaxe to mine copper and tin; the Elder drops the Swamp Key to one can open crypts containing scrap iron; Bonemass drops the Wishbone so one can readily find silver veins in the Mountains; and Moder drops Moder's tears so one can build a blast furnace to refine black metal.